USN Time: 4 hrs. Draw to a suitable scale : a. Plan showing reinforcement details. b. c/s at rnidspan along shorter span. c. cis at midspan along longer span. A RCC doglegged staircase has the following details : i) Staircase hall size (clear) :2.3 m x 4.7 m ii) Floor to floor height :3.3 m iii) Rise : 150 mm and tread :250 mm iv) Waist slab thickness v) Width of stair vi) Bearing : 150 mm : 1.10 m :230 mm : # 12@ 250 mm c/c :# 8 @275 mmclc l0cv62 (08 Marks) (06 Marks) (06 Marks) 12 at bottom and top. (06 Marks) (08 Marks) (06 Marks) Sixth Semester B.E. Degree Examination, June/Ju$ 2Al4 Design and Drawing of RG Structures o O O ! o. C€ () <d o ?a J- _o co ll trcc .= 6l d$ tr. Yo FO {'q ,= udJ c!tr d- 'gd -r3 (J 'ia OE o.X -= o(! o -.1 u= atE 6C !o <9 6= +9 O. U< -i c-i () z a, E PART _ A 1 A simply supported two way slab is supported on all the sides by a 230 mm thick wall. The dimensions of the two way slab is 4.5m x 5.5m (clear). Following are the details of reinforcement. i) Thickness of slab ii) Along short span iii) Along longer span iv) Negative steel for shorter span v) Negative steel for longer span vi) Alternative rods are bent up/cranked vii) Corner mats are # l0 @ 120 rnm clc at top and bottom, in two layers on all the corners for a distance of 0.950 m on either side viii) Use M20 grade concrete and Fe415 grade steel Note: l. Answer TWo futt questions from part - A or!"*'Marks:100 ONE full questionfrom Port - B. 2. LIse of 13:456-2000 and SP-76 is permitted. : 150 mm :# 12@ 130 mm c/c :# 10 @ll0mmclc : # 12 @260 mm c/c 1.20 m long : # 10 @220 mm c/c 1.430 m long vii) Number of steps per flight : 10 viii) Main steel ix) Distribution steel a. b. c. Two landing beams of size 230 mm x 250 mm are provided with? - # Stimrps are # 8 @ 200 c/c throughout. Draw to a suitable scale : Plan. Sectional elevation along second flight. Bar bending schedule. I of2